Who knew 17 years could go so fast? By the time it takes to send a kid to college, I’ve been toiling, mostly joyfully, at the Chronicle and SFGate.com. I am headed to KNBR 680-AM, where I will also be making radio appearances and occasionally filling in as a co-host and continuing as part of …

Why is Robinson, 28, still a free agent without a team a week into NFL training camps? The six-year veteran sustained four concussions and missed nine games in 2012 en route to a 24-catch, 252-yard season with the Jaguars. …

Indeed, Hall, 27, has arguably been the most impressive receiver not named Anquan Boldin during the first five practices of training camp. He was a frequent target of Kaepernick’s during Tuesday’s practice and the pair combined for a pair of 20-plus-yard connections late in the session. …

Six days after Brown fired Brian Overstreet for not altering him to a lucrative escalator clause in his contract, he hired prominent NFL agent Joel Segal, the Sports Business Journal reported. Segal also represents another 49ers cornerback, Chris Culliver, and defensive lineman Glenn Dorsey, who signed a two-year, $6 million deal with the team on the second day of free agency in March. …

The 49ers have waived/injured Darius Fleming after the second-year inside linebacker sustained another severe injury to his left knee in practice Sunday. A league source confirmed Fleming, a fifth-round pick in 2012, tore his ACL for the second time in 14 months in a kickoff drill during practice. …